Typewriting machine



E. B. HESS ET AL TYPEWRI'IIING MACHINE l; @gum Filed May 11, 19,20 2 sheets-sheet 1' f-"hwGv JH" "'Hm@ i"" l '.linlnl V n WM ATTORNEY May 29, `1923. E. B. HESS ET AL TYPEWRITING MACHINE 2 swam-sheer,

Original Filed May ll,

INVENTOR E warJlHess A TTORNE Y UNITED STATES PATENT OFFICE.

EDWARD B. HESS, CF BROOKLYN,

Original application filed May 11, 1920, Serial No. 380,601.

TYPEWRITING MACHINE.

Divided and this applicatlon nieu June 19,

1922. Serial No. 568,322.

To allv whom t may concern.'

' we` EDWARD B. Hess Be it known that and LEWIS C. MYERS,

citizens of the States of America, and residents,

tively, of the borough Newv York, county United respecof Brooklyn, city of of Kings, and State of New York, and Freeport, county of Nassau,

and State of New tain new and useful York, have invented cer- Iniprovements in Typewriting Machines. of which the following is a specification.

The present invention typewriting machines and has ticularly reference to the const associated with the transthe ball raceway versely movable c though not exclusively,

connection with the typewriter shown iii 380,601 filed May 1 1, present application is a The main object a vention is to prevent the particles of foreign matter the longitud the raceway, and the iiiveii the features of constriictio ment of parts hereinafter ing surfaces of In the accompany ventioii is disclosedi arriage, part susceptible o relates generally to morel pariuctioii of icularl iy f use in construction of Royal application Ser. No.

1920, of wh division. nd feature of disclosed. ing drawings n a concrete a ferred form in wliich- Fig. 1 is a view ich thi` the iiiaccumulation ofiipon the beariiial grooves of tion consists of n and arrangetlie iiiiid prein end elevation of a transversely movable typewriter 'carriage and its supporting means, with omitted for the sake of cleariiess.

' sectional view of the Fig. 2 is a vertical lower raceway. Figure 3 is a plan view of the low way and adjacent parts.

In the here disclose ab which slides the' having upper racewa tween the upper and usual balls 62 havin meshing with racks 6 and lower raceways le framework having lo d l indicates lower raceway g encircling 4 and 65 on t1 respectively.

parts particular embodiment of the ina suitwer raceway 4 in reciprocating carriage 7 y 2. Interposed beare the ears 63 e upper In conl York, this 26thday of M nectioii with the construction of the upper and loweiv raceways it -is to be noted that the shape of the longitudinal grooves with which balls 62 engage is unusual in that tie grooves are provided with longitiidinally extending raised portions 66 and a central gutter 6 The advantage of this construction, especially in connection with the lower raceway, is that dust or foreign particles of matter will not accumulate on surfaces 6G but wil work into gutter 67 with which balls 62 are not in engagement thereb of the parts.

Another advantage of this construction is that the 'raceways may be more quickly finished vthan heretofore, fact that when grinding of whiclr these raceways are made, the sur-A In a typewriting machine: an upper and a lower ball raceway having longitudinal grooves, the groove of the lower raceway having a central gutter' and a longitudinally extending terposed between said raceways.

2. In a typewriting machine: an upper and a lower ball' raceway having longitudinal grooves, the grooves of said raceways having each tudinally extending raised portion on each side of the4 gutter, rack opposite longitudinal edgesv of the raceways, and balls having encircling gears interposed between, said raceways.

Signed at New York city in the borough anhattan, county and State of New EDWARD B. LEWIS Hass. c. MYERS, 

